RedUNIT\Base\Xnull::testUnsetParent PHP Метод

    public function testUnsetParent()
    {
        R::nuke();
        $book = R::dispense('book');
        $book->title = 'My Book';
        $page = R::dispense('page');
        $page->text = 'Lorem Ipsum';
        $book->ownPage[] = $page;
        R::store($book);
        $page = $page->fresh();
        R::freeze(TRUE);
        asrt((int) $page->book->id, (int) $book->id);
        unset($page->book);
        R::store($page);
        $page = $page->fresh();
        asrt((int) $page->book->id, (int) $book->id);
        $page->book = NULL;
        R::store($page);
        $page = $page->fresh();
        asrt($page->book, NULL);
        asrt($page->book_id, NULL);
        asrt($page->bookID, NULL);
        asrt($page->bookId, NULL);
        $page = R::dispense('page');
        $page->text = 'Another Page';
        $page->book = NULL;
        try {
            R::store($page);
            fail();
        } catch (\Exception $exception) {
            pass();
        }
        unset($page->book);
        R::store($page);
        $page = $page->fresh();
        $page->book = NULL;
        //this must set field id to NULL not ADD column!
        try {
            R::store($page);
            pass();
        } catch (\Exception $exception) {
            fail();
        }
        $page = $page->fresh();
        $page->book = NULL;
        R::store($page);
        $page = $page->fresh();
        asrt(is_null($page->book_id), TRUE);
        $page->book = $book;
        R::store($page);
        $page = $page->fresh();
        asrt((int) $page->book->id, (int) $book->id);
        $page->book = NULL;
        R::store($page);
        asrt(is_null($page->book_id), TRUE);
        asrt(is_null($page->book), TRUE);
        R::freeze(FALSE);
    }